"use client"

import { Suspense, useCallback, useEffect, useMemo, useRef, useState } from "react"
import { useSearchParams } from "next/navigation"
import { readContainersUrl, patchContainersUrl, type ContainerStatusFilter } from "@/lib/containers-url-state"
import { PageHeader } from "@/components/page-header"
import { routerContainers as mockContainers, servers as mockServers } from "@/lib/data"
import type { RouterContainer, Server } from "@/lib/data"
import { Flag } from "@/components/flag"
import { Frame, FramePanel } from "@/components/reui/frame"
import { KpiStatGrid } from "@/components/reui-kit/kpi-stat-grid"
import { OpsPanel } from "@/components/ops-panel"
import { Button } from "@/components/ui/button"
import { Alert, AlertDescription } from "@/components/ui/alert"
import { AlertDialog, AlertDialogAction, AlertDialogCancel, AlertDialogContent, AlertDialogDescription, AlertDialogFooter, AlertDialogHeader, AlertDialogTitle } from "@/components/ui/alert-dialog"
import { cn } from "@/lib/utils"
import { toast } from "sonner"
import {
  DropdownMenu, DropdownMenuTrigger, DropdownMenuContent,
  DropdownMenuItem, DropdownMenuSeparator,
} from "@/components/ui/dropdown-menu"
import {
  BoxIcon, PlayIcon, StopCircleIcon, SearchIcon,
  MoreHorizontalIcon, Trash2Icon, PencilIcon, PowerIcon,
  CodeXmlIcon, ActivityIcon, ServerIcon,
  TerminalIcon, AlertCircleIcon, RefreshCwIcon,
} from "lucide-react"
import { CodeExportSheet } from "@/components/reui-kit/code-export-sheet"
import { useDataSource } from "@/lib/data-source"
import { ApiClientError, requestJson } from "@/shared/api/http-client"
import { mutateContainer, type ContainerAction, readContainersState } from "@/shared/api/containers"
import { serverListSchema } from "@mmapp/contracts/servers"
import type { ContainerServerState, ContainersState } from "@mmapp/contracts/containers"
import { can } from "@/lib/auth"
import { userApiError } from "@/shared/api/users"
import { ServerRailLayout, ServerRailMobileButton } from "@/components/server-rail-layout"
import { ALL_SERVERS_ID, type ServerTileItem } from "@/components/server-tile-rail"

type ContainerView = Omit<RouterContainer, "status" | "startOnBoot"> & { status: RouterContainer["status"] | "unknown"; startOnBoot: boolean | null }
type ContainerServer = Omit<Server, "status"> & {status: Server["status"] | null}

interface BackendServer {
  id: number
  name: string
  host: string
  type?: Server["type"]
  site?: string
  country: string
  asn?: string
  enabled: boolean
  status?: Server["status"] | null
  latency?: number | null
}

function mapBackendServer(s: BackendServer): ContainerServer {
  return {
    id: String(s.id),
    name: s.name || s.host,
    host: s.host,
    model: "—",
    os: "—",
    site: s.site ?? "",
    country: s.country || "UN",
    asn: s.asn ?? "",
    type: s.type ?? "exit-node",
    enabled: s.enabled,
    status: s.status ?? null,
    latency: s.latency ?? null,
    sessions: 0,
  }
}

function statusConfig(status: ContainerView["status"]) {
  return {
    unknown: { dot: "bg-muted-foreground", badge: "bg-muted text-muted-foreground border-border", label: "Неизвестно" },
    running: {
      dot: "bg-success",
      badge: "bg-success/10 text-success border-success/20",
      label: "Работает",
    },
    stopped: {
      dot: "bg-muted-foreground",
      badge: "bg-muted/50 text-muted-foreground border-border",
      label: "Остановлен",
    },
    error: {
      dot: "bg-destructive",
      badge: "bg-destructive/10 text-destructive border-destructive/20",
      label: "Ошибка",
    },
  }[status]
}

type ContainerExport = { container: ContainerView; collectedAt: string | null; failures: ContainerServerState["failures"]; source: "live" | "mock" }
function ExportSheet({ selection, onClose }: {selection: ContainerExport | null; onClose: () => void}) {
  const formats = useMemo(() => [{
    id: "json", label: "Снимок JSON", filename: "container-" + (selection?.container.id ?? "snapshot").replace(/[^a-zA-Z0-9_-]/g, "_") + ".json",
    code: selection ? JSON.stringify(selection, null, 2) : "",
  }], [selection])
  return <CodeExportSheet open={!!selection} onClose={onClose} title="Снимок контейнера" description="Данные каталога; конфигурация устройства и резервная копия в снимок не входят."
    className="data-[side=right]:w-full data-[side=right]:sm:max-w-xl min-w-0 [&_[data-slot=sheet-footer]]:flex-wrap"
    beforeCode={<p className="text-xs text-muted-foreground">{selection?.source === "mock" ? "Демонстрационные данные." : "Чтение RouterOS: " + (selection?.collectedAt ? new Date(selection.collectedAt).toLocaleString("ru-RU") : "время неизвестно")}{selection?.failures.length ? " Настройки получены частично; ошибки включены в JSON." : ""}</p>}
    returnFocus={() => Array.from(document.querySelectorAll<HTMLButtonElement>("button[aria-label]")).find(button => button.getAttribute("aria-label") === "Действия контейнера " + selection?.container.name) ?? null}
    formats={formats} />
}

function ContainerCard({
  container,
  server,
  live,
  busy,
  onExport,
  onStart,
  onStop,
  onRestart,
  onRemove,
}: {
  container: ContainerView
  server?: ContainerServer
  live: boolean
  busy: boolean
  onExport: () => void
  onStart: () => void
  onStop: () => void
  onRestart: () => void
  onRemove: () => void
}) {
  const cfg = statusConfig(container.status)
  const canMutate = live && Boolean(container.rosId) && !busy

  return (
    <Frame dense className="w-full overflow-hidden">
      <FramePanel className="p-0 overflow-hidden">
      <div className="px-4 py-3 border-b flex items-center justify-between gap-2 bg-muted/10">
        <div className="flex items-center gap-2 min-w-0">
          <span className={cn("size-2 rounded-full shrink-0", cfg.dot)} />
          <span className="font-mono font-semibold text-sm truncate">{container.name}</span>
          <span className={cn("text-[10px] font-mono px-1.5 py-0.5 rounded border shrink-0", cfg.badge)}>
            {cfg.label}
          </span>
        </div>
        <DropdownMenu>
          <DropdownMenuTrigger render={
            <Button variant="ghost" size="icon" aria-label={"Действия контейнера " + container.name} className="size-11 sm:size-8 shrink-0" disabled={busy}>
              <MoreHorizontalIcon aria-hidden="true" className="size-4" />
            </Button>
          } />
          <DropdownMenuContent side="bottom" align="end">
            {container.status === "running" ? (
              <DropdownMenuItem disabled={!canMutate} onClick={onStop}>
                <StopCircleIcon aria-hidden="true" className="size-4 text-warning" />Остановить
              </DropdownMenuItem>
            ) : (
              <DropdownMenuItem disabled={!canMutate || container.status === "unknown"} onClick={onStart}>
                <PlayIcon aria-hidden="true" className="size-4 text-success" />Запустить
              </DropdownMenuItem>
            )}
            <DropdownMenuItem disabled><TerminalIcon aria-hidden="true" className="size-4" />Логи</DropdownMenuItem>
            <DropdownMenuItem disabled><PencilIcon aria-hidden="true" className="size-4" />Редактировать</DropdownMenuItem>
            <DropdownMenuItem onClick={onExport}><CodeXmlIcon aria-hidden="true" className="size-4" />Снимок JSON</DropdownMenuItem>
            <DropdownMenuSeparator />
            <DropdownMenuItem disabled={!canMutate || container.status === "unknown"} onClick={onRestart}>
              <PowerIcon aria-hidden="true" className="size-4" />Перезапустить
            </DropdownMenuItem>
            <DropdownMenuSeparator />
            <DropdownMenuItem variant="destructive" disabled={!canMutate} onClick={onRemove}>
              <Trash2Icon className="size-4" />Удалить
            </DropdownMenuItem>
          </DropdownMenuContent>
        </DropdownMenu>
      </div>

      <div className="px-4 py-3 flex flex-col gap-3">
        <div className="flex items-center gap-2">
          <BoxIcon aria-hidden="true" className="size-3.5 text-muted-foreground shrink-0" />
          <span className="font-mono text-xs text-foreground/80 min-w-0 [overflow-wrap:anywhere]">
            {container.image || "Образ неизвестен"}{container.tag && <>:<span className="text-muted-foreground">{container.tag}</span></>}
          </span>
        </div>

        {server && (
          <div className="flex items-center gap-2 text-xs text-muted-foreground">
            <ServerIcon aria-hidden="true" className="size-3.5 shrink-0" />
            <Flag code={server.country} size={12} />
            <span className="font-mono truncate" title={server.name}>{server.name}</span>
          </div>
        )}

        {container.status === "running" && (container.uptime || container.cpu !== undefined || container.memMb !== undefined) && (
          <div className="flex items-center gap-4 text-xs text-muted-foreground border-t pt-2.5">
            {container.uptime && (
              <div className="flex items-center gap-1">
                <ActivityIcon aria-hidden="true" className="size-3 text-success" />
                <span>{container.uptime}</span>
              </div>
            )}
            {container.cpu !== undefined && (
              <div>
                <span className="text-muted-foreground">CPU </span>
                <span className={cn("font-mono font-medium",
                  container.cpu > 50 ? "text-warning" : "text-foreground")}>
                  {container.cpu}%
                </span>
              </div>
            )}
            {container.memMb !== undefined && (
              <div>
                <span className="text-muted-foreground">RAM </span>
                <span className="font-mono font-medium">{container.memMb} МиБ</span>
              </div>
            )}
          </div>
        )}

        {container.interfaces.length > 0 && (
          <div className="flex flex-wrap gap-1">
            {container.interfaces.map((i) => (
              <span key={i} className="text-[10px] font-mono px-1.5 py-0.5 bg-muted border rounded text-muted-foreground">
                {i}
              </span>
            ))}
          </div>
        )}

        {container.mounts.length > 0 && (
          <div className="flex flex-col gap-1">
            {container.mounts.map((m, idx) => (
              <div key={idx} className="text-[11px] font-mono text-muted-foreground flex items-center gap-1">
                <span className="text-muted-foreground/40">→</span>
                <span>{m.dst}</span>
                {m.src && <><span className="text-muted-foreground/40">←</span><span>{m.src}</span></>}
              </div>
            ))}
          </div>
        )}

        {container.comment && (
          <p className="text-xs text-muted-foreground border-t pt-2 [overflow-wrap:anywhere]">{container.comment}</p>
        )}
      </div>
      </FramePanel>
    </Frame>
  )
}

export default function ContainersPage() { return <Suspense fallback={<p role="status">Загрузка контекста контейнеров…</p>}><ContainersSource /></Suspense> }
function ContainersSource() {
  const { mode, backendUrl, prefsHydrated } = useDataSource()
  if (!prefsHydrated) return <p role="status">Загрузка настроек контейнеров…</p>
  return <ContainersContent key={JSON.stringify([mode, backendUrl])} />
}
function ContainersContent() {
  const { mode, backendUrl } = useDataSource()
  const isLive = mode === "live"
  const canRead = can("mm:dashboard:read")
  const canReadServers = can("mm:servers:read")
  const canWrite = can("mm:servers:write")
  const params = useSearchParams()
  const context = readContainersUrl(params)
  const search = context.search
  const statusFilter = context.status
  const selectedServerId = context.server
  const urlError = context.error
  function writeContext(changes: Record<string, string | null>, replace = false) {
    const href = patchContainersUrl(new URLSearchParams(window.location.search), changes) + window.location.hash
    if (replace) window.history.replaceState(null, "", href); else window.history.pushState(null, "", href)
  }
  const setSearch = (value: string) => writeContext({ q: value }, true)
  const setStatusFilter = (value: ContainerStatusFilter) => writeContext({ status: value === "all" ? null : value })
  const setSelectedServerId = (value: string) => writeContext({ server: value === ALL_SERVERS_ID ? null : value })
  const [exportContainer, setExportContainer] = useState<ContainerExport | null>(null)
  const [state, setState] = useState<ContainersState | null>(null)
  const [lastStates, setLastStates] = useState<Record<number, ContainerServerState>>({})
  const [liveServers, setLiveServers] = useState<ContainerServer[]>([])
  const [loading, setLoading] = useState(isLive && (canRead || canReadServers))
  const [busyId, setBusyId] = useState<string | null>(null)
  const [deleteTarget, setDeleteTarget] = useState<ContainerView | null>(null)
  const deleteReturnLabel = useRef<string | null>(null)
  useEffect(() => {
    if (deleteTarget || busyId || !deleteReturnLabel.current) return
    const frame = requestAnimationFrame(() => {
      const target = Array.from(document.querySelectorAll<HTMLButtonElement>("button[aria-label]")).find(button => button.getAttribute("aria-label") === deleteReturnLabel.current)
      ;(target ?? Array.from(document.querySelectorAll<HTMLButtonElement>("button")).find(button => button.textContent?.trim() === "Обновить"))?.focus()
    })
    return () => cancelAnimationFrame(frame)
  }, [deleteTarget, busyId])
  const [operationError, setOperationError] = useState<string | null>(null)
  const [operationNotice, setOperationNotice] = useState<string | null>(null)
  const [commandNeedsRead, setCommandNeedsRead] = useState(false)
  const mutationLock = useRef(false)
  const mutationController = useRef<AbortController | null>(null)
  const alive = useRef(true)
  useEffect(() => { alive.current = true; return () => { alive.current = false; mutationController.current?.abort() } }, [])
  const [liveError, setLiveError] = useState<string | null>(null)
  const [serversError, setServersError] = useState<string | null>(null)
  const [readAt, setReadAt] = useState<number | null>(null)
  const [serversReadAt, setServersReadAt] = useState<number | null>(null)
  const loadController = useRef<AbortController | null>(null)
  const loadRevision = useRef(0)
  const loadLive = useCallback(async () => {
    if (!isLive) return false
    loadController.current?.abort()
    const controller = new AbortController()
    loadController.current = controller
    const revision = ++loadRevision.current
    const current = () => !controller.signal.aborted && loadRevision.current === revision
    setLoading(true)
    const signal = AbortSignal.any([controller.signal, AbortSignal.timeout(30_000)])
    let stateComplete = !canRead
    const tasks = await Promise.allSettled([
      canRead ? readContainersState(backendUrl, { signal }).then(result => {
        stateComplete = result.servers.every(node => node.availability !== "error")
        if (current()) {
          setState(result); setReadAt(Date.now()); setLiveError(null)
          if (result.servers.every(node => node.availability !== "error")) setCommandNeedsRead(false)
          setLastStates(previous => Object.fromEntries(result.servers.map(node => [node.serverId, node.availability === "error" ? previous[node.serverId] ?? node : node])))
        }
      }).catch(error => { if (current()) setLiveError(userApiError(error)); throw error }) : Promise.resolve(),
      canReadServers ? requestJson<unknown>(backendUrl, "/api/servers", { signal }).then(payload => {
        const result = serverListSchema.parse(payload)
        if (new Set(result.map(server => server.id)).size !== result.length) throw new Error("Каталог серверов содержит дубли ID")
        if (current()) { setLiveServers(result.filter(server => server.enabled).map(mapBackendServer)); setServersReadAt(Date.now()); setServersError(null) }
      }).catch(error => { if (current()) setServersError(userApiError(error)); throw error }) : Promise.resolve(),
    ])
    if (current()) setLoading(false)
    return current() && stateComplete && tasks.every(task => task.status === "fulfilled")
  }, [isLive, backendUrl, canRead, canReadServers])
  useEffect(() => { let cancelled = false; queueMicrotask(() => { if (!cancelled) void loadLive() }); return () => { cancelled = true; loadController.current?.abort() } }, [loadLive])
  const displayContainers: ContainerView[] = useMemo(() => isLive ? Object.values(lastStates).flatMap(node => node.containers) : mockContainers, [isLive, lastStates])
  const displayServers = isLive ? liveServers : mockServers.filter(server => server.enabled)
  const effectiveServerId = selectedServerId
  const relevantStates = state?.servers.filter(node => selectedServerId === ALL_SERVERS_ID || String(node.serverId) === selectedServerId)
  const known = !isLive || !!state && (selectedServerId === ALL_SERVERS_ID || !!relevantStates?.length) && relevantStates!.every(node => node.availability !== "error")
  const stale = isLive && !!liveError
  const writeReady = !isLive || canWrite && !urlError && !commandNeedsRead && !loading && !stale && !!serversReadAt && !serversError
  const nodeFresh = (serverId: string) => !isLive || writeReady && state?.servers.some(node => String(node.serverId) === serverId && node.availability === "available" && displayServers.some(server => server.id === serverId))
  const scoped = useMemo(() => {
    if (effectiveServerId === ALL_SERVERS_ID) return displayContainers
    return displayContainers.filter((c) => c.serverId === effectiveServerId)
  }, [displayContainers, effectiveServerId])

  const serverById = useMemo(
    () => Object.fromEntries(displayServers.map((s) => [s.id, s])),
    [displayServers],
  )

  const railItems = useMemo<ServerTileItem[]>(() => (
    displayServers.map((s) => ({
      id: s.id,
      name: s.name,
      host: s.host,
      site: s.site,
      country: s.country,
      status: s.status ?? "unknown",
      type: s.type,
      enabled: s.enabled,
      meta: isLive && (!state || !state.servers.some(node => String(node.serverId) === s.id && node.availability !== "error")) ? "—" : String(displayContainers.filter((c) => c.serverId === s.id).length),
    }))
  ), [displayServers, displayContainers, state, isLive])

  const filtered = useMemo(() => {
    return scoped.filter((c) => {
      if (statusFilter !== "all" && c.status !== statusFilter) return false
      if (!search) return true
      const q = search.toLowerCase()
      return (
        c.name.toLowerCase().includes(q) ||
        c.image.toLowerCase().includes(q) ||
        (serverById[c.serverId]?.name.toLowerCase().includes(q) ?? false)
      )
    })
  }, [search, statusFilter, scoped, serverById])

  const running = scoped.filter((c) => c.status === "running").length
  const stopped = scoped.filter((c) => c.status === "stopped").length
  const errors = scoped.filter((c) => c.status === "error").length
  const statusKnown = known && scoped.every(container => container.status !== "unknown")
  const currentDeleteTarget = deleteTarget ? displayContainers.find(row => row.id === deleteTarget.id && row.rosId === deleteTarget.rosId && row.serverId === deleteTarget.serverId) : undefined
  const deleteStopped = currentDeleteTarget?.status === "stopped"

  async function mutate(c: ContainerView, action: ContainerAction) {
    if (!isLive || !c.rosId || !canWrite || !nodeFresh(c.serverId) || mutationLock.current || !displayContainers.some(row => row.id === c.id && row.rosId === c.rosId && row.serverId === c.serverId)) return
    if (action === "remove" && !displayContainers.some(row => row.id === c.id && row.rosId === c.rosId && row.serverId === c.serverId && row.status === "stopped")) return
    mutationLock.current = true
    const controller = new AbortController()
    mutationController.current = controller
    const current = () => alive.current && !controller.signal.aborted
    setBusyId(c.id); setOperationError(null); setOperationNotice(null)
    try {
      await mutateContainer(backendUrl, c.serverId, c.rosId, action, { signal: AbortSignal.any([controller.signal, AbortSignal.timeout(30_000)]) })
      if (!current()) return
      const labels = { start: "запуск", stop: "остановка", restart: "перезапуск", remove: "удаление" }
      const message = c.name + ": API подтвердил команду «" + labels[action] + "». Состояние проверяется повторным чтением."
      setOperationNotice(message)
      if (action === "remove") {
        setLastStates(previous => Object.fromEntries(Object.entries(previous).map(([id, node]) => [id, { ...node, containers: node.containers.filter(row => row.id !== c.id) }])))
        setDeleteTarget(null)
      }
      toast.success("Команда подтверждена API.")
      const refreshed = await loadLive()
      if (current() && !refreshed) setOperationNotice(message + " Обновление каталогов не удалось; повторите чтение.")
    } catch (error) {
      if (!current()) return
      const uncertain = !(error instanceof ApiClientError && error.status >= 400 && error.status < 500)
      setCommandNeedsRead(uncertain)
      setOperationError(c.name + ": " + userApiError(error) + (uncertain ? " Результат команды не подтверждён; она могла выполниться частично. Обновите каталог перед новым действием." : " Команда отклонена API."))
    } finally {
      if (mutationController.current === controller) { mutationController.current = null; mutationLock.current = false }
      if (alive.current) setBusyId(null)
    }
  }

  return (
    <>
    <ServerRailLayout
      items={railItems}
      selectedId={effectiveServerId}
      onSelect={setSelectedServerId}
      showAll
      preserveSelection
      allCount={displayServers.length}
      loading={isLive && loading && displayServers.length === 0}
      header={
        <PageHeader
          crumbs={[{ label: "Управление" }, { label: "Контейнеры" }]}
          actions={
            <>
              <ServerRailMobileButton />
              <Button
                variant="outline"
                size="sm"
                onClick={() => { void loadLive() }}
                disabled={!isLive || loading || !canRead && !canReadServers || !!busyId}
              >
                <RefreshCwIcon aria-hidden="true" className={cn("size-4", loading && "animate-spin")} />
                Обновить
              </Button>
              <Button size="sm" disabled title="Создание контейнеров ещё не подключено">
                <BoxIcon aria-hidden="true" className="size-4" />Новый контейнер
              </Button>
            </>
          }
        />
      }
    >
        <div className="flex flex-col min-w-0 gap-5 [overflow-wrap:anywhere]">

          {urlError && <Alert role="alert" aria-label="Контекст контейнеров" variant="warning"><AlertDescription>{urlError}<Button type="button" variant="outline" onClick={() => writeContext({server:null,status:null,q:null})}>Сбросить контекст</Button></AlertDescription></Alert>}
          {operationNotice && <p role="status" className="text-sm [overflow-wrap:anywhere]">{operationNotice}</p>}
          {operationError && !deleteTarget && <Alert role="alert" aria-label="Команда контейнера" variant="warning"><AlertDescription>{operationError}</AlertDescription></Alert>}
          {isLive && !canRead && <p role="status">Для каталога контейнеров требуется mm:dashboard:read.</p>}
          {isLive && !canReadServers && <p role="status">Для каталога серверов требуется mm:servers:read. Команды недоступны.</p>}
          {isLive && loading && !state && <p role="status">Загрузка контейнеров…</p>}
          {isLive && readAt && <p role="status" className="text-xs text-muted-foreground">Каталог контейнеров получен: {new Date(readAt).toLocaleTimeString("ru-RU")}</p>}
          {isLive && serversReadAt && <p role="status" className="text-xs text-muted-foreground">Серверы получены: {new Date(serversReadAt).toLocaleTimeString("ru-RU")}</p>}
          {isLive && liveError && <Alert variant="warning" role="alert" aria-label="Каталог контейнеров"><AlertDescription>{state ? "Последние данные сохранены." : "Контейнеры пока неизвестны."} {liveError}</AlertDescription></Alert>}
          {isLive && serversError && <Alert variant="warning" role="alert" aria-label="Серверы контейнеров"><AlertDescription>{serversReadAt ? "Последний каталог сохранён." : "Каталог серверов пока неизвестен."} {serversError}</AlertDescription></Alert>}
          {isLive && relevantStates?.map(node => node.availability === "error" || node.failures.length ? <Alert key={node.serverId} variant="warning" role="alert" aria-label={"Контейнеры сервера " + node.serverId}><AlertDescription>Сервер {serverById[String(node.serverId)]?.name ?? node.serverId}: {node.failures.map(f => f.resource + ": " + f.error).join("; ")}. {node.availability === "available" ? "Контейнеры получены; настройки загружены частично." : lastStates[node.serverId]?.containers.length ? "Последние контейнеры сохранены." : "Список неизвестен."}</AlertDescription></Alert> : node.availability === "unsupported" ? <p key={node.serverId} role="status">Сервер {serverById[String(node.serverId)]?.name ?? node.serverId}: пакет container недоступен.</p> : null)}
          {isLive && selectedServerId !== ALL_SERVERS_ID && !displayServers.some(server => server.id === selectedServerId) && <p role="alert">Выбранный сервер недоступен в каталоге. Выберите другое устройство; фильтр сохранён.</p>}
          {mode === "mock" && (
            <span className="inline-flex w-fit items-center gap-1.5 rounded-full border border-border bg-muted/40 px-2.5 py-0.5 text-[11px] font-medium text-muted-foreground">
              Моковые данные
            </span>
          )}

          <KpiStatGrid
            aria-label="Сводка контейнеров"
            items={[
              {
                id: "all",
                label: "Всего",
                value: known ? scoped.length : "—",
                icon: <BoxIcon aria-hidden="true" className="size-4" />,
                iconClassName: "text-muted-foreground",
              },
              {
                id: "running",
                label: "Работает",
                value: statusKnown ? running : "—",
                icon: <PlayIcon aria-hidden="true" className="size-4" />,
                iconClassName: "text-success",
              },
              {
                id: "stopped",
                label: "Остановлен",
                value: statusKnown ? stopped : "—",
                icon: <StopCircleIcon aria-hidden="true" className="size-4" />,
                iconClassName: "text-muted-foreground",
              },
              {
                id: "errors",
                label: "Ошибок",
                value: statusKnown ? errors : "—",
                icon: <AlertCircleIcon aria-hidden="true" className="size-4" />,
                iconClassName: "text-destructive",
                variant: errors > 0 ? "destructive" : "default",
              },
            ]}
          />

          <div className="flex items-start gap-3 rounded-lg bg-info/5 border border-info/20 px-4 py-3 text-sm">
            <BoxIcon aria-hidden="true" className="size-5 text-info shrink-0 mt-0.5" />
            <div>
              <p className="font-medium text-foreground">Контейнеры доступны с RouterOS 7.4+</p>
              <p className="text-muted-foreground text-xs mt-0.5">
                Поддерживаются Docker-совместимые образы. Требуется установка пакета <code className="font-mono bg-muted px-1 rounded">container</code>.
                Сеть veth настраивается на устройстве. Создание контейнеров в интерфейсе пока недоступно.
              </p>
            </div>
          </div>

          <div className="flex items-center gap-3 flex-wrap">
            <div className="flex items-center gap-2 h-8 px-3 border border-input rounded-md bg-background min-w-0 w-full sm:w-auto">
              <SearchIcon aria-hidden="true" className="size-3.5 text-muted-foreground shrink-0" />
              <input
                className="flex-1 min-w-0 bg-transparent outline-none placeholder:text-muted-foreground text-sm"
                aria-label="Поиск контейнеров" placeholder="Поиск по имени, образу, серверу…"
                value={search}
                onChange={(e) => setSearch(e.target.value)}
              />
            </div>

            <div role="group" aria-label="Статус контейнеров" className="flex flex-wrap items-center gap-1 rounded-md border border-border bg-muted/40 p-0.5">
              {(["all", "running", "stopped", "error", "unknown"] as const).map((s) => (
                <button key={s}
                  type="button" aria-pressed={statusFilter === s} onClick={() => setStatusFilter(s)}
                  className={cn(
                    "px-3 py-1 text-xs rounded whitespace-nowrap transition-colors",
                    statusFilter === s
                      ? "bg-background text-foreground shadow-sm"
                      : "text-muted-foreground hover:text-foreground",
                  )}>
                  {s === "all" ? "Все" : s === "running" ? "Работает" : s === "stopped" ? "Остановлен" : s === "unknown" ? "Неизвестно" : "Ошибка"}
                </button>
              ))}
            </div>

            <span className="text-sm text-muted-foreground ml-auto">{known ? filtered.length : "—"} контейнеров</span>
          </div>

          {filtered.length === 0 ? (!known ? <p role="status">Список контейнеров пока неизвестен.</p> : (
            <div className="flex flex-col items-center justify-center py-16 text-center text-muted-foreground">
              <BoxIcon aria-hidden="true" className="size-10 mb-3 opacity-20" />
              <p className="text-sm font-medium">Контейнеры не найдены</p>
              <p className="text-xs mt-1">{scoped.length ? "Измените фильтр или поиск" : "Подтверждённый каталог пуст"}</p>
            </div>
          )) : (
            <div className="grid grid-cols-1 md:grid-cols-2 xl:grid-cols-3 gap-4">
              {filtered.map((c) => (
                <ContainerCard
                  key={c.id}
                  container={c}
                  server={serverById[c.serverId]}
                  live={isLive && !!nodeFresh(c.serverId)}
                  busy={!!busyId}
                  onExport={() => { const snapshot = lastStates[Number(c.serverId)]; setExportContainer({ container: c, collectedAt: snapshot?.collectedAt ?? null, failures: snapshot?.failures ?? [], source: isLive ? "live" : "mock" }) }}
                  onStart={() => { void mutate(c, "start") }}
                  onStop={() => { void mutate(c, "stop") }}
                  onRestart={() => { void mutate(c, "restart") }}
                  onRemove={() => { deleteReturnLabel.current = "Действия контейнера " + c.name; setOperationError(null); setDeleteTarget(c) }}
                />
              ))}
            </div>
          )}

          <OpsPanel title="RouterOS 7.4+ · /container — быстрые команды" contentClassName="px-5 py-4">
              <div className="grid grid-cols-1 sm:grid-cols-3 gap-4 text-xs font-mono">
                {[
                  {
                    title: "Установка пакета",
                    lines: [
                      "# Скачать пакет container:",
                      "# mikrotik.com → Software",
                      "",
                      "/system/package/install",
                      "  container",
                      "",
                      "# Перезагрузить:",
                      "/system/reboot",
                    ],
                  },
                  {
                    title: "Создать контейнер",
                    lines: [
                      "# veth интерфейс:",
                      "/interface/veth/add \\",
                      "  name=veth-nginx \\",
                      "  address=172.17.0.2/24 \\",
                      "  gateway=172.17.0.1",
                      "",
                      "# Контейнер:",
                      "/container/add \\",
                      "  remote-image=nginx:alpine \\",
                      "  interface=veth-nginx",
                    ],
                  },
                  {
                    title: "Управление",
                    lines: [
                      "# Список:",
                      "/container/print",
                      "",
                      "# Запуск:",
                      "/container/start 0",
                      "",
                      "# Остановка:",
                      "/container/stop 0",
                      "",
                      "# Логи:",
                      "/container/shell 0",
                    ],
                  },
                ].map((b) => (
                  <div key={b.title}>
                    <p className="font-sans font-semibold text-foreground/80 mb-1.5 text-[11px] uppercase tracking-wide">{b.title}</p>
                    <pre className="bg-muted rounded-md p-2.5 text-foreground text-[11px] leading-relaxed overflow-x-auto whitespace-pre">
                      {b.lines.join("\n")}
                    </pre>
                  </div>
                ))}
              </div>
          </OpsPanel>

        </div>
    </ServerRailLayout>

      {deleteTarget && <AlertDialog open onOpenChange={open => { if (!open && !busyId) { setDeleteTarget(null); setOperationError(null) } }}>
        <AlertDialogContent>
          <AlertDialogHeader><AlertDialogTitle>Удалить контейнер?</AlertDialogTitle><AlertDialogDescription>{deleteTarget.name} · сервер {serverById[deleteTarget.serverId]?.name ?? deleteTarget.serverId}. {deleteStopped ? "Будет удалён остановленный контейнер. Дополнительная очистка файлов не выполняется." : "Сначала закройте это окно, остановите контейнер через меню действий и обновите каталог. Удаление доступно только после подтверждённой остановки."}</AlertDialogDescription></AlertDialogHeader>
          {operationError && <p role="alert" aria-label="Удаление контейнера" className="text-sm text-destructive [overflow-wrap:anywhere]">{operationError}</p>}
          <AlertDialogFooter>
            {(commandNeedsRead || !deleteStopped) && <Button type="button" variant="outline" disabled={loading || !!busyId} onClick={() => { void loadLive() }}>Обновить каталог</Button>}
            <AlertDialogCancel disabled={!!busyId}>Отмена</AlertDialogCancel>
            <AlertDialogAction type="button" variant="destructive" disabled={!!busyId || !deleteStopped || !nodeFresh(deleteTarget.serverId)} aria-busy={!!busyId} onClick={() => { void mutate(deleteTarget, "remove") }}>{busyId ? "Удаление…" : "Удалить"}</AlertDialogAction>
          </AlertDialogFooter>
        </AlertDialogContent>
      </AlertDialog>}
      <ExportSheet selection={exportContainer} onClose={() => setExportContainer(null)} />
    </>
  )
}